『Abstract
　The ore-forming role of black shales is discussed. Correlation of their distribution with high phosphorus and manganese concentrations is shown. Associations of black shales, phosphorites, and manganese ores are described. A mechanism is proposed for explaining their co-occurrence in natural environments. It is emphasized that black hales serve as not only ore-forming sequences, but also ore-generating formations for phosphorus and manganese deposits, as well as ore-concentrating rocks for chalcophile elements.』

（Introduction）
Concentration of phosphorus and manganese in black shales
Ore associations of black shales
Processes governing the behavior of phosphorus and manganese during the accumulation and transformation of black shales
Conclusions
Acknowledgments
References